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PRO-CHOP 

 
 

Operating Manual 

 

 

PATENTS PENDING WORLDWIDE 

 

 

Summary of Contents for PRO-CHOP

Page 1: ...PRO CHOP Operating Manual PATENTS PENDING WORLDWIDE ...

Page 2: ... a different circuit If one of the circuits or a piece of equipment in the path is faulty there is a real danger of electrical shock gig fx pedals offer the possibility of working in stereo using two amplifiers If one of your amplifiers is connected to a different electrical circuit from the other you need to make sure that both circuits are wired correctly Use a mains tester from an electrical or...

Page 3: ...ed by inexperienced personnel Beware of amplifiers that have switches that reverse polarity or ground lift connections When touring in foreign countries make sure your amplifiers are set for the correct voltage If you use a transformer to change the mains voltage from 110VAC to 220VAC or vice versa use a mains outlet tester to make sure the output of the transformer is correctly wired and the grou...

Page 4: ...wide variety of settings you can achieve unique sounds that will define your song or signature sound The PRO CHOP can also reproduce best in class classic sounds such as a tremolo rotating speaker or the chopped sounds which up until now were only associated with synthesizers But on top of all this the PRO CHOP can produce never heard before sounds that will inspire you to write the effects into y...

Page 5: ...use a lot of gain it is better to put the PRO CHOP last in the chain of effects This will retain the signal to noise ratio HOWEVER the PRO CHOP can be followed by note triggered effects to create some amazingly funky sounds ...

Page 6: ...s using a mains tester as described in the safety warning in this manual or call an electrician to test the outlets Once you have verified that the outlets are wired correctly you can usually solve the problem by disconnecting lifting ONE of the grounds on the amplifier circuits NOT BOTH IT IS DANGEROUS TO PLAY WITHOUT ANY GROUND AT ALL In the US you can do this by using a ground lifting plug whic...

Page 7: ... one of the grounds and any ground loop buzz should buzz off Powering it up AC Adapter The preferred adapter is a regulated 9V DC supply class 2 adapter with minimum 50mA output current capability Most commercially available 9V adapters designed for pedal effects will work 2 1mm diameter plug No harm will come to the unit if the power supply jack has the wrong polarity but double check that the ce...

Page 8: ... to turn off because of insufficient current to drive the optical switch The PRO CHOP draws around 30mA which will give a reasonable battery life However it is recommended that you use a power adapter on important sessions or gigs Be aware that if your power supply does not supply enough current to power all your effects power supply noise can increase substantially or cause other unwanted sound d...

Page 9: ... your pedal board with matching opposite strips of Velcro et vôila By Passing the unit The unit is by passed if the pedal is in the full back position You will not feel any switch as it is a noiseless wear free optical switch The effect will turn on when the pedal is depressed When bypassed neither the Chop nor Pan LED will be illuminated Please note even when by passed the pedal will draw current...

Page 10: ...ty of your sound and provides a silent switching mechanism Stereo v Mono The PRO CHOP can be used as a mono device or a stereo device however the PRO CHOP s sound effects are much more entertaining in stereo It is HIGHLY recommended to use the device in a stereo set up either by using a stereo amplifier two amplifiers or by using two channels in a PA stereo preamp or mixer each panned alternately ...

Page 11: ...ding your instrument is rarely confined to one side or another it is usually in stereo and many productions use panning or other effects which sound much better in stereo Now with the PRO CHOP your live performance need not be limited to mono and you have control of the sounds with a foot pedal ...

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Page 13: ...tio the pulse length of the on state In mono the CHOP mode can produce a dramatic rhythmic musical chant or groove When the rate is varied by the pedal the rate of the CHOP can be sped up or slowed down to produce dramatic effects such as a helicopter motorbike machine gun or spacey sounds like no other In stereo the left side is on when the right side is off and vice versa so the signal alternate...

Page 14: ...d the PAN rate and depth can all be varied independently to produce a variety of effects In this mode the PRO CHOP can be combined with other effects such as a wah or synth wah to produce some startlingly original effects The BLEND mode can be used to emulate the intro to The Who s famous song You Won t Get Fooled Again which was the inspiration for the PRO CHOP ...

Page 15: ... effects such as delay emulation sounds like a delay and has all of the texture but none of the hanging repeats STIR MODE This is the PAN wave by itself which when used in mono produces a tremolo effect The STIR mode goes where other tremolos do not go all the way from zero sound to full on and down as low as 0 3 Hz like a repeated swell sound Control the rate either by the pedal or a preset Adjus...

Page 16: ...y putting the PRO CHOP in STIR mode and using the pedal to vary the speed of rotation to produce a startlingly realistic Leslie effect If you add a subtle flange chorus to your guitar sound it will sound very Hammondish PLEASE NOTE THERE MAY BE A RATE RESET TIME WHEN SLOWING THE PAN TREMOLO RATE EITHER BY PEDAL OR MIDI WORST CASE IS AROUND A FEW SECONDS RESET TIME THIS CAN BE AVOIDED BY CHANGING T...

Page 17: ...position the CHOP or PAN rates speed can be varied by moving the pedal up and down By putting the slide switches to Preset the rates are adjusted by means of the Rate knobs on each side The CHOP or the PAN effects are independent of one another and as such the two rates can either be preset or adjusted by the pedal Usually the preset knobs can give a little extra range so for example if you want a...

Page 18: ...e control on the left controls the CHOP frequency whereas the control on the right controls the PAN frequency The rate controls are operative if the relevant slide switch is set to preset and by passed if the slide switch is set to Pedal These rate controls can be over ridden if a MIDI signal is presented ...

Page 19: ...HOP sound As the knob is turned to the right the pulse gets longer and the silent interval gets shorter In stereo if one pulse is long the other is short DEPTH CONTROL PAN or tremolo only The depth control adjusts the modulation depth of the PAN stereo or Tremolo mono The PRO CHOP modulation depth goes all the way to off giving a 100 PAN effect or a very deep tremolo pulse ...

Page 20: ...MIDI out from the PC drum machine to the PRO CHOP and the PRO CHOP will automatically detect the beat and sync to it When engaged with MIDI the pedal will allow the MIDI clock signal to control the rate of either the CHOP or PAN according to how the pedal is set The treadle unit then becomes an off on switch When turned on the PRO CHOP will be automatically in sync It is a stunning and original ef...

Page 21: ... to right see LCD display diagram You can choose any one of four parameters to adjust whether you want MIDI sync turned on or off how many chops pans tremolo waves to a MIDI beat whether you want to monitor the chop rate or the pan tremolo rate on the LCD and finally whether you want to monitor these rates in Hz cycles per second an analog measurement or Beats Per Minute this is MIDI terminology ...

Page 22: ...utton to adjust the parameter as required For example if you want to hear four chops for every MIDI beat use the scroll button to scroll to the MULTIPLIER icon and then press the modify button to get the number 4 lit up Simple stuff See the tables on the following pages to get the full picture ...

Page 23: ...d and radiated emissions EMI as described in CISPR 22 EMI requirements as described in EN55013 UL listing not required if used with class 2 limited current power supply or 9V battery CE norms Additional Features Wear earplugs at loud gigs and don t let substances abuse you ...

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Page 34: ... for protecting the design and some functions Contact info gig fx com for customer support and further information or call USA 1 978 263 6432 Inside USA call toll free 1 866 784 4439 gig fx Inc 1050 Winter Street Suite 1000 Waltham MA 02451 ...

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